JPH04130546A - Data management device - Google Patents

Abstract

PURPOSE:To shorten data transfer time and to reduce a storage area by storing data to which various kinds of information processors commonly refer on a storage device to be respectively managed and on a storage device to be managed by a master information processor. CONSTITUTION:A data fetch part 23 fetches a data element from a slave data group 42 when the data element is included in a slave data group 42, and requests the transfer of the data element to a data transfer part 13 and adds the data element to be transferred to the slave data group 42 when the data element is not included in the slave data group 42. Thus, the frequently-used data can be referred to in the minimum time by fetched with the aid of respective information processors 20 from a storage device 40 to be managed, and the data not frequently used is fetched from a storage device 30 managed by a master information processor 10. Thus, the excessive use of the storage area of the storage device 40 managed by the respective information processors 20 can be eliminated.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a data management device in an information processing device. 4. Prior Art With the spread of workstations in recent years, the number of cases in which multiple workstations are used in combination has increased. There is.

In this case, a device for holding and managing common data for each workstation is required.

FIG. 4G& is a configuration diagram of the first data management device according to the prior art. A Ascaris 110 is a master information processing device that manages data commonly used by each workstation 7). 131 is a data group, which is a collection of data elements commonly used by each workstation 413
0 is a master storage device that stores the data group 131; 4 111 is an update information input unit that inputs update information that prompts updating of data elements included in the data group 131; 112; 1 is a data update unit that updates the data element according to the update information input by the update information input unit 111; 150 is a communication interface that sends data to an external information processing device that refers to the data group 131; It is used to transfer elements. 113
is a data transfer unit that reads data elements of the data group 131 and transfers the data elements to an external information processing device via the communication ink face 150.

120 is a slave information processing device, which is connected to the master information processing device 110. 122 is a data retrieval information input unit, which inputs data retrieval information that prompts the retrieval of data elements included in the data group 131. A data retrieval unit 123 requests the data transfer unit 113 to transfer data elements according to the data retrieval information input by the data retrieval information input unit 122, and receives the data transferred via the communication interface 150. The operation of retrieving data in the first data management device according to the conventional technology configured as described above will be explained below. 2, data retrieval information having a data identifier for identifying the data element is input from the data retrieval information input section 122, and in response, the data retrieval section 123 inputs the data element identified by the data identifier included in the data retrieval information. The data transfer unit 113 is prompted to read the data.

3. The data transfer unit 113 reads the data element from the master storage device 130 and transfers the data element via the communication interface 150 to the slave information processing device 120, which is the data read requester. The retrieval unit 123 receives the data element. (End) FIG. 5 is a configuration diagram of a second data management device according to the prior art. Ascaris 240 is a slave storage device,
A memory device 212 that is a storage device managed by a plurality of slave information processing devices 120 that refer to the data group 131 is a data update unit that updates data elements included in the data group 131 according to update information input by the update information input unit 111. Do
＼ AND S This is to prompt the transfer unit 113 to transfer the data element.Mo 262 is a sub data group, which has the same content as the data group 131 and is stored in the slave storage device 240.Mo 261 is for data reception. Part 223 is a data retrieval unit that receives data elements transferred via the communication interface 150 and updates the sub data group 262. A data retrieval unit 223 extracts the sub data group according to data retrieval information input by the data retrieval information input unit 122. The operation of the second data management device according to the prior art configured as described above will be described below.

1. The operator inputs data retrieval information having a data identifier for identifying a data element included in the data group 131 from the data retrieval information input section 122. The data retrieval unit 223 retrieves the data element identified by the data identifier included in the data retrieval information from the slave storage device 240. 131 is inputted from the update information input unit 111, and the data update unit 212 identifies the data elements using the data identifiers included in the data update information. The data transfer unit 2 updates the data elements stored in the master storage device according to the update information.
13 to transfer said data element.

3. In response, the data transfer unit 213 reads the updated data element from the master storage device 130 and sends the updated data element to all the slave information processing devices 120 that manage the sub data group 262 via the communication interface 150. 4. In response, the data receiving unit 261 receives the data element via the communication interface 150,
Although the sub data group 262 is updated with the data element (
(End) Problems to be Solved by the Invention The first data management device according to the prior art, as explained in the above-mentioned specific example, always transmits the data via the communication interface when each information processing device refers to data that is commonly used. Eighth, the data transfer speed through a communication interface is generally slower than the data transfer speed within an information processing device. Moreover, the second data management device according to the prior art is as explained in the above specific example! Data that is commonly used by each information processing device must be read from the storage device managed by each information processing device itself. Data that may have been changed had to be stored in the storage device managed by the information processing device, and the storage area of the storage device was being used excessively.Also, data changes occurred on the host information processing device side. In this case, data is transferred to each information processing device regardless of the processing that each connected information processing device is doing, so each information processing device interrupts the processing it is currently doing and transfers the data. 9 Invention g1 In view of the above-mentioned problems that conventional data management devices had, each information processing device can refer to frequently used data in the minimum amount of time, and can refer to less frequently used data in a minimum amount of time. To provide a device that can update data only when the data is needed, without using too much storage area of the storage device, and without interrupting the process being performed for a long time when updating data. A master storage device for storing a data group consisting of at least one data element; an update information input unit that inputs update information having a data identification number that identifies included data elements; and the data group that is identified by the data identification number that the update information has when the update information input unit inputs update information. a data update unit that updates data elements therein and transmits an update signal having the data identification number to an external information processing device; and a data transfer unit that transfers the data elements included in the data group to the external information processing device. a slave storage device that stores a slave data group that is a subset of the data group; and a data retrieval information input unit that inputs data retrieval information having a data identification number.
When the data retrieval information input unit inputs the data retrieval information and the data element identified by the data identification number included in the data retrieval information is included in the slave data group, the data element is retrieved from the slave data group. a data retrieval unit that requests the data transfer unit to transfer the data element when the data element is not included in the slave data group, receives the data element transferred by the data transfer unit, and adds it to the slave data group; , a data erasing unit that receives an update signal transmitted by the data update unit and erases a data element identified by a data identification number included in the update signal from a slave data group when receiving the update signal. A data management device is configured.

Operation The data management device of the present invention has the above-described configuration, so that when the data retrieval information input unit inputs data retrieval information having a data identification number for identifying a data element, the data retrieval unit determines whether the data element is included in the slave data group. If the data element is not included in the slave data group, the data element is requested to be transferred to the data transfer unit, and the data transferred by the data transfer unit is To receive the element and add it to the slave data group
When the update information input unit inputs update information having a data identification number that identifies a data element included in the data group, the data update unit inputs the data in the data group identified by the data identification number included in the update information. The data erasure unit updates the element and transmits an update signal having the data identification number to an external information processing device, and the data erasing unit receives the update signal and converts the data element identified by the data identification number included in the update signal into slave data. This makes it possible to eliminate from a group.

Embodiment Hereinafter, one embodiment of the data management device of the present invention will be described with reference to the drawings.

FIG. 1 is a block diagram of a data management device according to an embodiment of the present invention. Reference numeral 10 is a master information processing device that manages data commonly used by each workstation. A data group 31 is composed of data elements commonly used by each workstation. A master storage device 30 stores the data group 31. Reference numeral 11 denotes an update information input section, which inputs update information having a data identification number for identifying data elements included in the data group 31. 4. Reference numeral 12 denotes a data update section, in which the update information input section 11 is manually input. When the update information input unit 11 inputs update information according to the update information, the data group 31
The module 50 is a communication interface that updates a data element identified by a data identification number included in the update information and sends an update signal having the data identification number to an external information processing device. A data transfer unit 13 reads data elements in the data group 31 and transfers the data to the external information processing device via the communication interface 50. 42 is a subset of the slave data group 31, 541 is a data index, and when a data element is transferred by the data transfer unit, the data element is transferred to the slave data group 42. All data elements constituting the data group 31 are composed of a data index element having a download flag indicating whether to add or not, presence/absence information indicating whether the data element exists in the slave data group 42, and a data identification number. The system 20 is a slave information processing device, which is connected to the host information processing device 10 and has the data index element corresponding to the data group 31.
Reference numeral 22 is a data retrieval information input section for inputting data retrieval information having a data identification number for identifying data elements included in the data group 31. Reference numeral 23 is a data retrieval section; When the data retrieval information input unit 22 inputs data retrieval information, and when the existence/absence information of the data index element having the same data identification number as the data identification number of the data retrieval information is present, the data identification number When the presence/absence information is absent, requests the data transfer unit 13 to transfer the data, and retrieves the data element identified by the data transfer unit 13 from the slave data group 42. If received via the communication interface 50 and the download flag of the data index element is true, the data element is added to the slave data group 42 - and the presence/absence information of the data index element is rewritten to present. The data erasing unit 25 receives the update signal transmitted by the data update unit 12, and upon receiving the update signal, deletes the data element identified by the data identification number included in the update signal into the slave data group 42. FIG. 2 is a configuration diagram of the data index. a Ascaris 60
is the data index element, 61 is the data identification number, 62 is the presence/absence information, and 63 is the download flag.4 The operation of the data management device of this embodiment configured as described above is as follows. The operation ζ when data retrieval information is input is performed according to the algorithm shown in FIG. 3.

Although FIG. 3 shows the following algorithm, (301) the operator inputs data retrieval information having a data identification number for identifying a data element included in the data group 31 from the data retrieval information input section 22 (302). go.

(302) If the existence/absence information 62 of the data index element 60 having the same data identification number 61 as the data identification number of the input data retrieval information is present, go to (303); if absent, go to (304) ).

(303) The data element identified by the data identification number 61 is retrieved from the slave data group 42, and the process is terminated (304) The data element is transferred to the data transfer unit 1.
3 and receives the data element transferred by the data transfer unit 13 via the communication interface 50 (305).

(305) If the download flag of the data index element 60 is true, the process goes to (306). If it is false, the process ends (306) and the data element is added to the slave data group 42 (307).

(307) The location/data that the data index element 60 has
You can also rewrite the absence information to present.Proceed to the 4th step to end the process.The operation when data update information is input is explained below.1.The operator selects the data group 31 from the update information input section 11.
2, the data update unit 12ζ inputs update information having a data identification number that identifies a data element included in the data group 31, and in response, the data update unit 12 and transmits an update signal having the data identification number to an external information processing device.

3. In response, the data erasing unit 25 receives the update signal transmitted by the data update unit 12, erases the data element identified by the data identification number included in the update signal from the slave data group 42, and sends the update signal (End) As described above, in the data management device of this embodiment, each information processing device It is also possible to store data that is commonly referenced by each device on the storage device managed by each host information processing device. Therefore, frequently used data is managed by each information processing device itself. Data can be referenced at high speed because it only needs to be read from the storage device and there is no need to use a communication interface with slow transfer speeds.Infrequently used data is stored in the memory managed by each information processing device. Since it is read from the storage device managed by the host information processing device without being stored in the device, the storage capacity of the storage device of each information processing device is not overwhelmed.1. Xo Furthermore, when data changes occur on the host information processing device side, the update work is as simple as deleting the copy of the data on the storage device managed by each information processing device and setting the presence/absence information in the data index to absent. It is often not necessary to transfer the updated data for data updating.When the data is required in the processing performed by each information processing device, it is often necessary to transfer the updated data for data updating. Inevitably, the updated data on the host information processing device side is transferred and referenced, and if the download flag of the data index is true at this time, the data is stored in the storage device managed by each information processing device. At this point, the data is not updated for the first time.In this way, in the data management device of this embodiment, there is no interruption in the work of each information processing device due to data transfer accompanying the update of data, and each information processing device In this embodiment, the data transferred by the data transfer section I3 is The ability to judge whether or not to add to the slave data group 42 based on the value of the download flag 62 of the data index element 60 corresponding to the data (not limited to this method, it is also possible to use another method) For example, as an alternative to the download flag 62, a data transfer count that counts the number of times the data has been transferred from the data transfer unit 13 is recorded, and if the data transfer count does not exceed a certain number, the data is transferred to slave data. You may also adopt the method of not adding data to group 42. In this method, it is possible to automatically determine which data is frequently referenced and which data is rarely referenced by counting the number of references. Effects of the Invention In the data management device of the present invention, when each information processing device refers to data, if the data exists on the storage device managed by each device, the host information processing device must retrieve it and refer to it. The data is transferred and referenced from the storage device being managed.Also, if the data is updated on the host information processing device, the data on the storage device managed by each information processing device is erased at this point. Updated data is not transferred l,% Only when the data needs to be referenced during the processing performed by each information processing device, the data is transferred from the storage device managed by the host information processing device. Data that is frequently used in each information processing device is retrieved from the storage device managed by each information processing device so that it can be referenced in the minimum amount of time. By retrieving infrequently used data from the storage device managed by the host information processing device, the storage area of the storage device managed by each information processing device is not excessively used, and when updating data, each information processing device Since the data on the storage device managed by the information processing device is simply erased, it is possible to avoid interrupting the processing performed by each information processing device for a long time. It is possible to solve problems such as reducing storage space usage during data accumulation and reducing processing interruptions during data updates.

[Brief explanation of drawings]

Figure 1 shows the configuration of a data management device according to an embodiment of the present invention.
FIG. 2 is a configuration diagram of a data index according to an embodiment of the present invention. FIG. 3 is a flow diagram showing a data retrieval algorithm in an embodiment of the present invention. FIG. FIG. 5 is a configuration diagram of a second data management device according to the prior art. Pulse 22・
... Data retrieval information human power a23 ... Data retrieval eye 25 ... Data eraser 41 ... Data index input 42 ... Name of slave data agent Patent attorney Akira Kokaji et al. 2 famous sweets

Claims (2)

[Claims] (1) a master storage device that stores a data group consisting of one or more data elements; an update information input unit that inputs update information having a data identification number that identifies a data element included in the data group; When the update information input unit inputs update information, it updates a data element in the data group identified by a data identification number included in the update information, and sends an update signal having the data identification number to an external information processing device. a data update unit that sends out data; a data transfer unit that transfers data elements included in the data group to an external information processing device; a slave storage device that stores a slave data group that is a subset of the data group; and a data identification number. a data retrieval information input unit that inputs data retrieval information having a data retrieval information; and when the data retrieval information input unit inputs the data retrieval information, a data element identified by a data identification number included in the data retrieval information is included in the slave data group. If the data element is included in the slave data group, the data element is extracted from the slave data group, and if the data element is not included in the slave data group, the data transfer unit is requested to transfer the data element, and the data transfer unit transfers the data element. a data retrieval unit that receives the data element and adds it to a slave data group; and data that receives an update signal transmitted by the data update unit and that is identified by a data identification number that the update signal has when the update signal is received. A data management device comprising: a data erasing unit that erases an element from a slave data group. (2) When a data element is transferred by the data transfer unit, a download flag indicating whether or not the data element is added to the slave data group and presence/absence information indicating whether the data element exists in the slave data group. and a data index element having a data identification number, and the data index element corresponding to all the data elements constituting the data group, and when the data retrieval information input unit inputs the data retrieval information, the data retrieval unit When presence/absence information of the data index element having the same data identification number as the data identification number of the data retrieval information is present, extracting the data element identified by the data identification number from the slave data group; When the presence/absence information is absent, the data transfer unit is requested to transfer the data element, the data transfer unit receives the data element transferred, and the download flag of the data index element is true; adds the data element to the slave data group and rewrites the presence/absence information of the data index to be present, and the data erasing section receives an update signal transmitted by the data update section, and upon receiving the update signal, performs the update. Deleting the data element identified by the data identification number of the signal from the slave data group, and rewriting presence/absence information of the data index element having the same data identification number as the data identification number of the update signal to "absence". The data management device according to claim 1.